A fast longitudinal folding frame

Abstract

Disclosed is a folding bicycle. A frame thereof can be divided into two parts, i.e. a front fork folding unit and a rear fork folding unit. The folding form is longitudinal folding, and the operation mode is to twist or plug together a head pipe (1) and a seat post (7). In this frame, a front fork (4) and the head pipe (1) are set as one piece after being folded, a rear fork (9) is housed as one piece with the seat post (7) after being folded, and using the two folding units enables the four positions of the frame to be folded. The invention can effectively solve the problem that existing folding bicycles have insufficient rigidity and durability, and has the characteristics of simplicity and reliability, smooth lines, easy and elegant operation, small volume after being folded, and high folding speed.

Description

technical field [0001] The patent of the present invention relates to a bicycle, in particular to a bicycle that can be quickly folded longitudinally. Background technique [0002] In recent years, bicycle sports have spread among Chinese people who pay more and more attention to the quality of life, accompanied by the popularization of automobiles and the widespread spread of public transportation. Due to these two factors, portable folding bicycles have also been widely accepted and appreciated. use. The common folding method of folding bicycles on the market is generally horizontal folding, that is, the folding and unfolding of the frame is realized by using the handle to control the box-type folding buttons on the beam and other parts. This method has the advantages of simple process and low cost. However, because the folding part is located at the root of the frame and the head tube, its rigidity and durability are not ideal. In addition to ordinary horizontal folding...

AI Technical Summary

Problems solved by technology

The common folding method of folding bicycles on the market is generally horizontal folding, that is, the folding and unfolding of the frame is realized by using the handle to control the box-type folding buttons on the beam and other parts. This method has the advantages of simple process and low cost. However, because the folding part is located at the root of the frame and head tube, its rigidity and durability are not ideal

In addition to ordinary horizontal folding bicycles, some higher-grade folding bicycles adopt longitudinal folding design, and thus obtain better safety and durability. However, these longitudinal folding bicycle frames still have complicated structures and cumbersome operations. Disadvantages such as large size and chain drop

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